2.1 Using Variables

Question 1

Counterexample

Answer 1

is an example that proves that a conjecture or statement is false

Question 2

conjecture

Answer 2

a statement that is believed to be true

Question 3

Conditional statement

Answer 3

is a statement that can be written in the form “if p, then q,” where p is the hypothesis of the statement and q is the conclusion.

Question 4

converse, inverse, and contrapositive

Answer 4

of a conditional statement

Question 5

biconditional statement

Answer 5

conditional statement and its converse are both true, they can be combined into a single

Question 6

Definitions

Answer 6

Biconditional statement can be used to write